First of all sorry for my bad english, it's not my native language. I want to buy an iMac but I'm not sure which iMac I want to buy. is 27 inch too big? I will probably get Parallels to play some windows games such as Sims 3 (with expansion packs), Sims 4 (2014) (with expansion packs), League of Legends, GTA 5 (Maybe) (If they relase a PC/Mac version). Also I will buy a Apple USB superdrive. I will buy it in March but I checked prices, iMac with 3.4 GHz i7 processor, Apple USB superdrive, NVIDIA GeForce GTX 680MX 2GB GDDR5 and iWork was a little bit expensive. So, Do I need an i7 processor and 2 GB GPU? If I buy an iMac with 1 gb GPU and i5 cpu, can I change them later? Also I think I will get a 27 iMac beacuse, It has a bigger screen and removable RAM. But do I need an 27 inch iMac? Is it really worth of 2,467 USD? or Should I buy 1,999 USD model? Thank you.